The letter, released Thursday, was written to election officials in six states, including Colorado. The Secretary of State's Office is currently reviewing the requests in the letter.

The RNC writes, "In a significant number of cases, voting machines in your states have populated a vote for Barack Obama when a voter cast his or her ballot for Mitt Romney." The RNC requests four actions to "mitigate any potential machine errors."

A spokesperson for the Secretary of State's Office says there were a "small number" of issues with machines in Adams County and Mesa County. The spokesperson said they have taken action where they have been needed to so far.

Those machines which were not working properly have been shut down, recalibrated, inspected, and are now in reserve for Election Day, according to the Secretary of State's office.

The Republican National Committee's letter requests all voting machines be recalibrated before Election Day. They also want additional technicians be deployed in case of further issues; signs be placed reminded voters to double-check their ballots; and voters be reminded verbally to check their ballots before submission.

The Secretary of State's Office says the voter can review their selection on a screen before submitting their ballot. They do not recalibrate each machine on Election Day.

The letter was also sent to officials in Missouri, North Carolina, Kansas, Ohio, and Nevada. You can view the entire letter at